Clovis I did not convert from paganism to Catholicism out of faith in the dogmas of the Roman Catholic church. Rather he saw his conversion as an opportunity to consolidate power much like Constantine did not even a century earlier.
Clovis I was conditionally converted on the field of battle, where an opportunity offered itself for a change of faith under more auspicious circumstances.
Clovis, about to be defeated in the battle in the plains of Tolbiac in desperation and despair vowed to be a Catholic if he somehow find victory. As luck would have it, the opposing King of the Allemanni was mortally wounded.
Without a doubt Clovis conversion was driven more so by his ambitions rather than faith. Using his new found authority the other petty kings of France were dethroned and killed by the treacheries of Clovis.
Clovis had Sidebert King of Cologne murdered and his territory seized under pretense. He pursued to kill and subjugate until his own kingdom extended from the Rhine to Switzerland.
He tricked Visigoth Catholics into turning against King Alaric thus effectively dividing the Visigoths and undermining the rule of King Alaric, who had earlier agreed to an aliance with Clovis.
source: Pictorial history of the middle ages by John Frost